I have ordered these before and after several years of getting beat up in the elements on my deck, I had to replace them. I found that using some sort of a heavy bag at the legs keeps them from falling over when it is windy. I used a bag of potting soil but I think that I might buy a few bags of sand for the future. Very portable and easy to set up and take down. I recommend these for their ease or use and durability. 

Pros: great value, easy to set up and take down, pretty durable
Cons: Fall over easily when windy without weight at the base